From bd919f30aeb45828404899a1524b2028446860bd Mon Sep 17 00:00:00 2001
From: Peter Stephenson <p.w.stephenson@ntlworld.com>
Date: Sun, 17 Nov 2013 20:33:57 +0000
Subject: 32001: fix crash on ${:*} and ${:|}

---
 Src/subst.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Src/subst.c')

diff --git a/Src/subst.c b/Src/subst.c
index a4df2567f..1059508ef 100644
--- a/Src/subst.c
+++ b/Src/subst.c
@@ -2941,6 +2941,14 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags)
 		}
 	    }
 	}
+	if (vunset) {
+	    if (unset(UNSET)) {
+		*idend = '\0';
+		zerr("%s: parameter not set", idbeg);
+		return NULL;
+	    }
+	    val = dupstring("");
+	}
     } else {			/* no ${...=...} or anything, but possible modifiers. */
 	/*
 	 * Handler ${+...}.  TODO: strange, why do we handle this only
-- 
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